CN103366514A - Refrigerator with CO detection alarming function - Google Patents
Refrigerator with CO detection alarming function Download PDFInfo
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- CN103366514A CN103366514A CN2013102833123A CN201310283312A CN103366514A CN 103366514 A CN103366514 A CN 103366514A CN 2013102833123 A CN2013102833123 A CN 2013102833123A CN 201310283312 A CN201310283312 A CN 201310283312A CN 103366514 A CN103366514 A CN 103366514A
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Abstract
The invention relates to a refrigerator with a CO detection alarming function. The refrigerator is provided with a CO detection alarming module, and the CO detection alarming module comprises a gas sensor, an operational amplification circuit, a control circuit, a step-down rectification circuit and an alarming module, wherein the gas sensor is used for acquiring and outputting a CO gas concentration signal which is an electrical signal; the operational amplification circuit is connected with the gas sensor, and is used for amplifying the electrical signal; the control circuit is connected with the operational amplification circuit, and is used for converting the electrical signal output by the operational amplification circuit into a digital signal, comparing the digital signal with an alarming threshold value, and outputting an alarming control signal; the step-down rectification circuit is connected with the control circuit, and is used for performing step-down rectification filtering processing on externally input direct current power, thereby providing direct current power of a corresponding specification for the control circuit; and the alarming module is connected with the control circuit, and gives an alarm according to the alarming control signal output by the control circuit. According to the technical scheme, the popularization degree of equipment for CO gas detection in a house can be greatly improved.
Description
Technical field
The present invention relates to refrigerator, particularly relate to a kind of refrigerator of the CO of having detection alarm function.
Background technology
Gas poisoning mainly is because human body has sucked excessive CO(carbon monoxide).
The main cause that premises produces CO generally includes: the rough burning of rock gas, coal gas, liquefied gas, fuel oil and coal etc.; The water heater Rig up error causes exhaust gas recirculation; Chimney or gas outlet stop up; In confined space, drive engine and lighting a fire heating etc.
Because people often think that not burning coal in the dwelling house just not can cause gas poisoning, and the equipment that carries out the detection of CO gas at present in dwelling house is generally free-standing CO alarm, be that the CO alarm directly connects the 220V alternating current or is connected with direct current, need the user selection installation, therefore, present popularity of carrying out the detection of CO gas in dwelling house is low-down.
Yet the harm that causes in view of gas poisoning and above-mentioned premises produce the reason of CO, dwelling house is carried out CO gas detect still very necessaryly, carry out the popularity that equipment that CO gas detects installs at premises and await increasing substantially.
Because above-mentionedly existingly carry out CO gas at premises and detect existing problem, the inventor is based on being engaged in for many years abundant practical experience and professional knowledge of this type of product design manufacturing, and the utilization of cooperation scientific principle, positive research and innovation in addition, to founding a kind of new refrigerator with CO detection alarm function, can overcome and existingly carry out CO gas at premises and detect existing problem, make it have more practicality.Through constantly research, design, after repeatedly studying sample and improvement, finally create the present invention who has practical value.
Summary of the invention
The object of the invention is to, overcome existing premises CO gas and detect existing problem, and provide a kind of refrigerator with CO detection alarm function of new structure, problem to be solved to be, significantly improve the popularity of the equipment that premises CO gas detects.
Purpose of the present invention and solve its technical matters and can adopt following technical scheme to realize.
A kind of refrigerator with CO detection alarm function according to the present invention's proposition, be provided with CO detection alarm module on the described refrigerator, and described CO detection alarm module comprises: gas sensor be used for gathering and output CO gas concentration signal, and described concentration signal is electric signal; Operational amplification circuit is connected with described gas sensor, is used for the electric signal of gas sensor output is amplified processing, and the electric signal after the output amplification; Control circuit is connected with described operational amplification circuit, is used for the electric signal of described operational amplification circuit output is converted to digital signal, and described digital signal and alarm door limit value are compared, according to as a result output alarm control signal relatively; Step-down rectifying circuit is connected with described control circuit, and the direct supply that the outside is inputted carries out step-down rectifier filtering processing, thereby the direct supply of dimension is provided for described control circuit; Alarm module is connected with control circuit, reports to the police according to the alarm control signal of described control circuit output.
Purpose of the present invention and solve its technical matters and can also be further achieved by the following technical measures.
Better, aforesaid refrigerator with CO detection alarm function, wherein said gas sensor are semiconductor gas sensor.
Better, aforesaid refrigerator with CO detection alarm function, wherein said gas sensor are that model is the semiconductor gas sensor of TGS2442.
Better, aforesaid refrigerator with CO detection alarm function, wherein control circuit comprises: the single-chip microcomputer with A/D conversion.
Better, aforesaid refrigerator with CO detection alarm function, wherein alarm module comprises: voice guard and/or warning lamp.
Better, aforesaid refrigerator with CO detection alarm function, wherein said CO detection alarm module also comprises: the LCD display module is connected with described control circuit signal; Described control circuit also is used for exporting described digital signal, and described LCD display module is used for showing current CO gas concentration numerical value according to described digital signal.
Better, aforesaid refrigerator with CO detection alarm function, wherein said CO detection alarm module also comprises: the sensor wrap that is provided with venting channels that covers on the described gas sensor outside.
Better, aforesaid refrigerator with CO detection alarm function, wherein said gas sensor is fixedly installed on the upside of refrigerator doors, and protrudes from described refrigerator doors.
Better, aforesaid refrigerator with CO detection alarm function, the upside of wherein said refrigerator doors is provided with preformed groove, and the circuit board at described gas sensor place is embedded in the described preformed groove, and described gas sensor protrudes from the upper surface of described refrigerator doors.
By technique scheme, the refrigerator of the CO of having detection alarm function of the present invention has following advantages and beneficial effect at least: the present invention is by arranging CO detection alarm module at refrigerator, can utilize the popularity of refrigerator to improve premises and carry out the popularity that CO gas detects, thus the explosion phenomenon that can effectively avoid harm that indoor CO excessive concentration produces human body and CO excessive concentration to cause.
Above-mentioned explanation only is the general introduction of technical solution of the present invention, for can clearer understanding technological means of the present invention, and can be implemented according to the content of instructions, and for above and other purpose of the present invention, feature and advantage can be become apparent, below especially exemplified by preferred embodiment, and the cooperation accompanying drawing, be described in detail as follows.
Description of drawings
Fig. 1 is the schematic diagram that is arranged at a physical circuit of the CO detection alarm module on the refrigerator of the present invention;
Fig. 2 is the schematic diagram after CO detection alarm module of the present invention is installed on the refrigerator doors;
Fig. 3 is the installation decomposing schematic representation of CO detection alarm module of the present invention on refrigerator doors.
Embodiment
Reach technological means and the effect that predetermined goal of the invention is taked for further setting forth the present invention, below in conjunction with accompanying drawing and preferred embodiment, its embodiment of refrigerator, structure, feature and effect thereof with CO detection alarm function to foundation the present invention proposes are described in detail as follows.
At present, domestic refrigerator has spread to every household basically, and the position at refrigerator place is generally the place (such as the kitchen) that is easy to produce CO gas, if can make refrigerator have CO detection alarm function, then the detection of premises CO gas can be carried out very easily, and the popularity of carrying out the equipment of CO gas detection at premises can greatly be improved.
The present invention just is being based on above-mentioned consideration and is developing a kind of refrigerator with CO detection alarm function of new structure, and this refrigerator also is provided with CO detection alarm module on it except comprising the conventional components such as refrigeration device.
Above-mentioned CO detection alarm module mainly comprises: gas sensor, operational amplification circuit, control circuit, step-down rectifying circuit and alarm module; In addition, this CO detection alarm module can further include: LCD display module and the sensor wrap with venting channels.Wherein, the gas sensor that is covered with sensor wrap is connected with operational amplification circuit, and control circuit is connected respectively with operational amplification circuit, step-down rectifying circuit, alarm module and LCD display module.
Gas sensor is mainly used in gathering (such as real-time collection) CO gas concentration signal, and exports the CO gas concentration signal that it collects to connected operational amplification circuit, and this CO gas concentration signal is electric signal.
Gas sensor comprises polytype sensor, and the present invention adopts semiconductor gas sensor usually, is the semiconductor gas sensor of TGS2442 such as model.Semiconductor gas sensor mainly is when utilizing gas to be measured to contact with semiconductor surface, and the change in physical such as the conductivity of generation carry out that gas detects.Semiconductor gas sensor mainly comprises: sensitive element, well heater and shell sintered part (perhaps film-type, thick-film type).
For CO gas, work function at the sensitive element of semiconductor gas sensor〉in the situation of electron affinity of absorption molecule, the absorption molecule can discharge electronics (positive ion absorption) to sensitive element, thereby makes the charge carrier increase (R ↓) of sensitive element.The change in resistance of sensitive element or conductivity variations become certain relation with the concentration of CO gas.
The sensitivity that detects in order to improve gas, usually need well heater to heat to accelerate redox reaction (temperature is generally 200～450 ℃), simultaneously, the heating of well heater can also make mist of oil on the observing and controlling part that is attached to semiconductor gas sensor and dust etc. burn.
Operational amplification circuit is mainly used in the electric signal that connected gas sensor transmission comes is amplified processing, and the electric signal after processing is amplified in output.Operational amplification circuit mainly comprises triode.
Control circuit is mainly used in the electric signal of connected operational amplification circuit output is converted to digital signal (A/D conversion), and this digital signal and alarm door limit value compared, thereby control circuit can determine whether according to the result of this comparison to alarm module output alarm control signal, as when this digital signal surpasses the alarm door limit value, to the alarm module output alarm signal, with trigger alarm module report to the police (reporting to the police such as sound/light), and when this digital signal is no more than the alarm door limit value from returning to above the alarm door limit value, to alarm module output stop alarm signal, no longer carry out alarm operation with the control alarm module.
The digital signal that this control circuit can also be used for obtaining after its A/D conversion is to the output of LCD display module, so that the LCD display module can show current CO gas concentration numerical value to the user.The LCD display module that this LCD display module can comprise for refrigerator self also can be in order to realize that CO gas detects the LCD display module that increase setting.
This control circuit mainly comprises: have the single-chip microcomputer of A/D translation function, this control circuit also comprises other auxiliary elements, such as resistance, electric capacity and transistor switching circuit of arranging for alarm module etc.
Step-down rectifying circuit is mainly used in the need for electricity according to control circuit, and the direct supply that the outside is inputted carries out step-down rectifier filtering processing, thereby the direct supply of the dimension that satisfies its demand is provided for control circuit.This step-down rectifying circuit can adopt existing circuit structure, is 7805 circuit of three-terminal voltage-stabilizing integrated as comprising model.
Alarm module is mainly used in reporting to the police according to the control of control circuit.This alarm module can carry out sound/light reports to the police, and can comprise such as this alarm module: voice guard and warning lamp; Voice guard such as hummer etc.; Warning lamp such as LED lamp etc.; Like this, when current indoor CO gas concentration surpassed predetermined threshold, under the control of control circuit, hummer was rung and red LED lamp continues flicker, should take appropriate measures with the caution user, as the ventilation of windowing, close combustion gas etc.Above-mentioned warning lamp can be arranged at LCD display module place, thereby when reporting to the police, the LCD display module under the effect of the flickers such as LED light and shade occurs to be changed.
The circuit part of CO detection alarm module of the present invention can be divided into two parts setting, as gas sensor and hummer are arranged on the little circuit board, operational amplification circuit, control circuit and step-down rectifying circuit are set to master control board, and the LCD display module is connected with master control board.Above-mentioned little circuit board should expose to refrigerator body, and above-mentioned master control board can be arranged at refrigerator body inside.
A concrete circuit of CO detection alarm module of the present invention is (not shown LCD display module among Fig. 1) as shown in Figure 1.When assembling, J1 among Fig. 1 and J2 peg graft, J3 and J4 peg graft, and semiconductor gas sensor, J2, J4 and hummer are arranged on the little circuit board, as shown in Figure 3, this little circuit board is embedded in the preformed groove of refrigerator doors upper surface, and is connected by the master control board signal of pre-buried wire harness with operational amplification circuit, control circuit and step-down rectifying circuit place.Sensor wrap is located on the gas sensor by the fixed screw fixed cover, and the gas sensor that is covered with sensor wrap protrudes from the upper surface of refrigerator doors, as shown in Figure 2.
The above only is preferred embodiment of the present invention, be not that the present invention is done any pro forma restriction, although the present invention discloses as above with preferred embodiment, yet be not to limit the present invention, any those skilled in the art are not within breaking away from the technical solution of the present invention scope, when the technology contents that can utilize above-mentioned announcement is made a little change or is modified to the equivalent embodiment of equivalent variations, in every case be the content that does not break away from technical solution of the present invention, any simple modification that foundation technical spirit of the present invention is done above embodiment, equivalent variations and modification all still belong in the scope of technical solution of the present invention.
Claims (9)
1. the refrigerator with CO detection alarm function is characterized in that, is provided with CO detection alarm module on the described refrigerator, and described CO detection alarm module comprises:
Gas sensor be used for gathering and output CO gas concentration signal, and described concentration signal is electric signal;
Operational amplification circuit is connected with described gas sensor, is used for the electric signal of described gas sensor output is amplified processing, and the electric signal after the output amplification;
Control circuit is connected with described operational amplification circuit, is used for the electric signal of described operational amplification circuit output is converted to digital signal, and described digital signal and alarm door limit value are compared, according to the as a result output alarm control signal of described comparison;
Step-down rectifying circuit is connected with described control circuit, and the direct supply that the outside is inputted carries out step-down rectifier filtering processing, thereby the direct supply of dimension is provided for described control circuit;
Alarm module is connected with described control circuit, reports to the police according to the alarm control signal of described control circuit output.
2. refrigerator as claimed in claim 1 is characterized in that, described gas sensor is semiconductor gas sensor.
3. refrigerator as claimed in claim 2 is characterized in that, described gas sensor is that model is the semiconductor gas sensor of TGS2442.
4. refrigerator as claimed in claim 1 is characterized in that, described control circuit comprises: the single-chip microcomputer with A/D conversion.
5. refrigerator as claimed in claim 1 is characterized in that, described alarm module comprises: voice guard and/or warning lamp.
6. such as the described refrigerator of arbitrary claim in the claim 1 to 5, it is characterized in that, described CO detection alarm module also comprises: the LCD display module is connected with described control circuit signal;
Described control circuit also is used for exporting described digital signal, and described LCD display module is used for showing current CO gas concentration numerical value according to described digital signal.
7. such as the described refrigerator of arbitrary claim in the claim 1 to 5, it is characterized in that, described CO detection alarm module also comprises: the sensor wrap that is provided with venting channels that covers on the described gas sensor outside.
8. such as the described refrigerator of arbitrary claim in the claim 1 to 5, it is characterized in that, described gas sensor is fixedly installed on the upside of refrigerator doors, and protrudes from described refrigerator doors.
9. refrigerator as claimed in claim 8 is characterized in that, the upside of described refrigerator doors is provided with preformed groove, and the circuit board at described gas sensor place is embedded in the described preformed groove, and described gas sensor protrudes from the upper surface of described refrigerator doors.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013102833123A CN103366514A (en) | 2013-07-05 | 2013-07-05 | Refrigerator with CO detection alarming function |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013102833123A CN103366514A (en) | 2013-07-05 | 2013-07-05 | Refrigerator with CO detection alarming function |
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| CN103366514A true CN103366514A (en) | 2013-10-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2013102833123A Pending CN103366514A (en) | 2013-07-05 | 2013-07-05 | Refrigerator with CO detection alarming function |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103969297A (en) * | 2014-05-09 | 2014-08-06 | 苏州经贸职业技术学院 | Indoor CO concentration detector |
| CN105222506A (en) * | 2015-08-21 | 2016-01-06 | 合肥华凌股份有限公司 | Gas concentration method for early warning, gas concentration prior-warning device and refrigerator |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20010003309A (en) * | 1999-06-22 | 2001-01-15 | 윤종용 | Refrigerater having a watching apparatus |
| CN201177858Y (en) * | 2008-04-01 | 2009-01-07 | 广州视源电子科技有限公司 | Multi-functional household electrical appliance |
| CN201229097Y (en) * | 2008-05-29 | 2009-04-29 | 宋世鹏 | Electric refrigerator |
-
2013
- 2013-07-05 CN CN2013102833123A patent/CN103366514A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20010003309A (en) * | 1999-06-22 | 2001-01-15 | 윤종용 | Refrigerater having a watching apparatus |
| CN201177858Y (en) * | 2008-04-01 | 2009-01-07 | 广州视源电子科技有限公司 | Multi-functional household electrical appliance |
| CN201229097Y (en) * | 2008-05-29 | 2009-04-29 | 宋世鹏 | Electric refrigerator |
Non-Patent Citations (1)
| Title |
|---|
| 张福才等: "基于ADuC834单片机的一氧化碳监测报警仪设计", 《工业仪表与自动化装置》, no. 4, 31 December 2007 (2007-12-31), pages 68 - 69 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103969297A (en) * | 2014-05-09 | 2014-08-06 | 苏州经贸职业技术学院 | Indoor CO concentration detector |
| CN105222506A (en) * | 2015-08-21 | 2016-01-06 | 合肥华凌股份有限公司 | Gas concentration method for early warning, gas concentration prior-warning device and refrigerator |
| CN105222506B (en) * | 2015-08-21 | 2018-01-16 | 合肥华凌股份有限公司 | Gas concentration method for early warning, gas concentration prior-warning device and refrigerator |
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Application publication date: 20131023 |